Polaris New OEM ECM ECU Electronic Control Module Ranger 500 Ignition Unit Genuine Polaris Part Number 4011089 - MODULE-500 ECM for Polaris ATV / Motorcycle / Snowmobile/ or Watercraft Buy your parts from the largest Polaris OEM Parts Dealer in the Country All Genuine Polaris Repair Parts have a 30 Day Manufacturers Warranty Please do not order by description - Make sure you have the correct Part Number We charge a 20% restock fee on Returns